Pyrazolidinol compounds

C - Chemistry – Metallurgy – 07 – D

Patent

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Details

C07D 231/32 (2006.01) A61K 31/415 (2006.01) A61K 31/4152 (2006.01) A61K 31/495 (2006.01) A61K 31/55 (2006.01) A61K 45/06 (2006.01) A61P 31/08 (2006.01) A61P 37/06 (2006.01) C07D 231/30 (2006.01)

Patent

CA 2377200

The invention provides the use of an optionally hydroxy-protected 4-hydroxy or hydroperoxy-3,5-dioxopyrazolidine or an equivalent wherein a pyrazolidine ring attached oxygen is replaced by a sulphur, or a physiologically acceptable salt thereof, for the manufacture of a medicament for use in therapy or prophylaxis. Additionally, the invention provides a method of combatting HIV infection which comprises administering to an HIV-infected patient a T- lymphocyte growth suppressing agent, preferably a pyrazolidinol, in an amount sufficient to suppress T-lymphocyte growth in said patient for a period sufficient to reduce the T-lymphocyte concentration in lymph nodes in said patient by at least 25 % said administration being repeated at intervals of at least 3 months.

L'invention concerne l'utilisation de 4-hydroxy ou hydroperoxy-3,5-dioxopyrazolidine à protection hydroxy éventuelle ou d'un équivalent, avec substitution de soufre à oxygène fixé par une chaîne pyrazolidine, y compris les sels pharmaceutiquement acceptables correspondants, pour la fabrication d'un médicament, à des fins thérapeutiques ou prophylactiques. L'invention concerne également un procédé permettant de lutter contre l'infection par le HIV, qui consiste à administrer à un patient infecté par le HIV un agent inhibiteur de croissance des lymphocytes T, de préférence pyrazolidinole, en quantité suffisante visant à inhiber ladite croissance pendant une durée suffisante pour réduire d'au moins 25 % la concentration des lymphocytes T dans les noeuds lymphatiques, l'opération étant répétée à intervalles d'au moins trois mois.

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